653987013 has 8 divisors (see below), whose sum is σ = 872832576. Its totient is φ = 435566400.

The previous prime is 653986997. The next prime is 653987021. The reversal of 653987013 is 310789356.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 653987013 - 2⁴ = 653986997 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (653987053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102628 + ... + 108813.

It is an arithmetic number, because the mean of its divisors is an integer number (109104072).

Almost surely, 2^653987013 is an apocalyptic number.

It is an amenable number.

653987013 is a deficient number, since it is larger than the sum of its proper divisors (218845563).

653987013 is a wasteful number, since it uses less digits than its factorization.

653987013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212475.

The product of its (nonzero) digits is 136080, while the sum is 42.

The square root of 653987013 is about 25573.1697878851. The cubic root of 653987013 is about 868.0066279128.

The spelling of 653987013 in words is "six hundred fifty-three million, nine hundred eighty-seven thousand, thirteen".